package com.example.springboot.controller;


import org.springframework.stereotype.Controller;
import org.springframework.stereotype.Repository;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.SessionAttribute;
import org.thymeleaf.util.StringUtils;

import javax.servlet.http.HttpSession;

@Controller
public class LoginController {

//    @ResponseBody  有这个是跳转到文字，没得话就是跳转到视图
    //Model 回显数据
    @RequestMapping("/user/login")
    public String login(@RequestParam("username") String username, @RequestParam("password") String password,
            Model model, HttpSession session){

        //具体业务
        if(!StringUtils.isEmpty(username) && "123456".equals(password)){
            session.setAttribute("loginUser",username);
            return "redirect:/main.html";
//            return "dashboard";  // 此时地址栏明显出现密码
            //防止地址栏出现密码
        }else {
            //告诉用户，你登录失败了
            model.addAttribute("msg","用户名或密码错误!");
            return "index";
        }

    }



    // 注销
    @RequestMapping("/user/logout")
    public String logout(HttpSession session){
        session.invalidate();
        return "redirect:/main.html";
    }

}
